Are perceptual judgments of different surface attributes based on the same relative weighting of depth cues?
” Perception 36 ECVP Abstract Supplement Are perceptual judgments of different surface attributes based on the same relative weighting of depth cues? J T Todd Numerous theoretical analyses have shown that an individual source of visual information can adequately specify some aspects of 3-D structure but not others. For example, the optical velocity field of a rotating object can uniquely specify the local tilt or shape index of a surface, but it cannot unambiguously specify the local slant or curvedness. To what extent does this influence the relative weighting of cues when multiple sources of information are available? To address this question, observers adjusted the two independent curvatures of a quadric surface patch defined by multiple consistent cues to match the apparent 3-D structure of a second surface for which the individual cues specified different shapes. The results reveal that cue weights can vary significantly between different components of curvature in a manner that i
